WING: ELLOBIOPSIDAE FROM NORTH PACIFIC 



Figure 4. — Holotype of Thalassomyces albatrossi n.sp. A. Cluster of trophomeres. B. Pair of trophomeres, each bearing three 



gonomeres. C. Separate gonomeres. 



Table 4. — Dimensions of 15 distal gonomeres from holotype 

 of Thalassomyces albatrossi n.sp. 



Dimension 



Range 

 (mm) 



Mean 

 (mm) 



SD 



0.95 CI 

 of mean 



Length 

 Diameter 

 Length-diameter 

 ratio 



0.41-0.68 

 0.25-0.32 



1.5-2.4 



0.57 

 0.27 



2.1 



0.07 

 0.03 



0.3 



0.04 

 0.01 



0.15 



segments — the site of attachment to the ello- 

 biopsid. Histological studies were not done be- 

 cause of this damage. Each of the three primary 

 stalks passes through the carapace of the host. 

 Just inside the carapace there is a connection 

 between the left pair of stalks. A similar con- 

 nection between the right stalk and the left 

 anterior stalk is indicated by a torn piece of an 

 ellobiopsid projecting from the right stalk toward 

 the left anterior stalk. Below the connection 

 between the left pair of stalks is a small (about 

 1.5 mm long) elongate conical organ of absorp- 

 tion (fixation), which appears to have passed 

 through or between the ovaries of the host. The 

 organ is similar to that figured for T. nouveli 

 by Hoenigman (1954). 



Description of Paratype 



The paratype is an immature ellobiopsid con- 

 sisting of two primary stalks which pass through 

 the carapace of the host. None of the tropho- 

 meres bear more than two gonomeres; several 

 of them have no gonomeres and appear to have 

 been damaged in handling or by drying after 

 preservation. Because of the withered state of the 

 specimen, no accurate measurements of either the 

 trophomeres or the gonomeres can be made. 

 The gonomeres on one of the stalks are, how- 

 ever, thinner than those on the other. No sporu- 

 lating gonomeres are present. 



Specimens Examined 



In the discussion that followed his description 

 of S. major, Tattersall (1951) states that two 

 specimens were parasitized by an ellobiopsid 

 resembling T. fasciatus (Fage). Subsequent 

 authors accepted this tentative identification 

 by Tattersall, but my examination of the ello- 

 biopsids from his material revealed only T. 



Ill 



